private static ColorInfo[,] AverageColorInfo(Bitmap image, int lineHeight, int lineWidth)
{
int width = image.Width / lineWidth;
int height = image.Height / lineHeight;
int pixelCount = width * height;
// foreach goes through the rightmost index first
ColorInfo[,] output = new ColorInfo[lineWidth, lineHeight];
for (int y = 0; y < lineHeight; y++)
{
for (int x = 0; x < lineWidth; x++)
{
float totalBright = 0;
int totalRed = 0;
int totalGreen = 0;
int totalBlue = 0;
for (int a = x * width; a < (x + 1) * width; a++)
{
for (int b = y * height; b < (y + 1) * height; b++)
{
Color pixel = image.GetPixel(a, b);
totalBright += pixel.GetBrightness();
totalRed += pixel.R;
totalGreen += pixel.G;
totalBlue += pixel.B;
}
}
float avgBright = totalBright / pixelCount;
byte avgRed = (byte)(totalRed / pixelCount);
byte avgGreen = (byte)(totalGreen / pixelCount);
byte avgBlue = (byte)(totalBlue / pixelCount);
output[x, y] = new ColorInfo(avgRed, avgGreen, avgBlue, avgBright);
}
}
return(output);
}
private static void WriteToText(ColorInfo[,] tiles)
{
using (StreamWriter sw = new StreamWriter("out.txt", false, Encoding.UTF8))
{
for (int y = 0; y < tiles.GetLength(1); y++)
{
for (int x = 0; x < tiles.GetLength(0); x++)
{
ColorInfo info = tiles[x, y];
if (info.Brightness > 0.875)
{
sw.Write(' ');
}
else if (info.Brightness > 0.625)
{
sw.Write(Strings.ChrW('\u2591'));
}
else if (info.Brightness > 0.375)
{
sw.Write(Strings.ChrW('\u2592'));
}
else if (info.Brightness > 0.125)
{
sw.Write(Strings.ChrW('\u2593'));
}
else
{
sw.Write(Strings.ChrW('\u2588'));
}
}
sw.WriteLine();
}
}
}
